Method of embossing



Patented Dec. 25. 1934 ,UNI-TED STATES PATENT OFFICE v 1,985,306 .Y v-

ME'rno'n oF nnmosslNG E. Shaw, East Orange. N. J., assignor to,Adartcrafa Incorporated, New York, N. Y., a corporation of Delaware Y lApplication March 4', 1931, serial No. 520,067

and more particularly to methods of making deep embossings.

In embossing brous sheets the raised portion of the embossing isgenerally formed from a flat .sheet necessitating stretching ofthe bersand thus weakening the structure. The depth of the embossing is thuslimited by the abilityof the brous sheet to stretch without tearing. Inmaking various types of embossings the embossed structure is of greatdepth and great care must be exercised to prevent tearing of the sheet.Thus, in the display devicev of th'e character described and claimed inthe application of Rudolph M.

. Sanders, Serial No.- 460,931, filed June 13th, 1930 it is verydifficult to obtain the desired depth of embossing from a at sheet.

In the present invention Iobtain deep embossin'gs by providing acorrugated sheet or a sheet' having an irregular surface. This providesadditional material from which the embossings may Y Fig. 1 is avertical, sectional view of the corrugating apparatus;

Fig. 2 is a front elevation thereof;

Fig. 3 is an end elevation thereof; l

Fig. 4 is a detailed, sectional view of an embossing die; f Y

Fig. 5 is a plan view of an embossed membersimulating a row ofcigarsprior to folding;

Fig. 6 is a similar view of the embossed member in folded position; v

' Fig. 'I is a detailed, sectional view thereof; and

Fig. 8 is an embossed member simulating a llayer of candy.

Referring to Figs. 1 to 3 of the drawing, the

corrugating apparatus comprises a pair of rolls for simulating a layerof candy 'or other product 1 and 2 provided with corrugating grooves 3'in their surfaces. The rolls are mounted on shafts 4 and 5 arranged insuitable bearings. The bearings 6 of the lower'shaft are rigidly-mountedin suitable end members or standards'l and the bearings 8 of the uppershaft are slidably mounted in the end members and are adapted'to beadjusted to desired pressures by means of springs 9. These springs areprovided with follwers 10. the position of which maybe adjusted by meansof threaded bolts 11 received in the upper ends of the standards wherebythe pressure of the spring may be regulated. A burner pipe '.12 isarranged beneath the lower roller 1 to heat the roller and 'thus cause'the paper or other fibrous sheetto be heated and facilitate corrugatingof the sheet. A series of vstripper wires'13 extend over the lower rollbeing mounted in suitable cirfed through the corrugating rolls as 'shownin Fig. 1 of the drawingto'producec a corrugated sheet B. i

vReferring to Figs. 4 to 7 of the drawing, the corrugated sheetB may beemployed for the purpose of simulating a row-of cigars to produce 1 adisplay device adapted to heal-ranged in a cigar box in the positionnormally occupied by the top 'Y row of cigars as described and claimedin the Sanders application referred to above. An embossing diecomprising a lower member 15 and an upper member 16 is adapted' to forma series of embossings having the, appearance of the exposed portions ofindividual cigars. As shown, the die may be heated by heating wires 17arrangedtherein. It will'be apparent to one skilled in the art that theamount of material between two of the individual representations 18 of acigar in the completed embossed product is greater than the amount ofmaterial occupied by a at sheet of the same width and when theembossings are made from a fiat sheet considerable stretching of thefibrous sheet is necessary. By employing the corrugated sheet B, Iprovide additional .material which is reshaped to form the embossing.with considerable less stretching and therefore less .liability oftearing. Y

In Fig. 5, of the drawing, I have shown an embossed sheet with theunembossed material 19 between theindividual representations of thecigars cut or trimmed as at 20 and scored as at 21 -to. permit folding.-The sheet is then folded as in the simulations of the individualcandies are indicated at 22. The embossed product is made insubstantially the same manner heretofore described in connectionwith thesimulation of cigars, ,the diesections 15 and lbeing suitably shaped toproduce the individual embossings 22. It will be apparent that inproducing the individual embossings 22 from a at sheet considerablestretching of the brouspsheet would be necessary whereas an excess ofmaterial is provided by corrugations or other projections which permitsthe formation of these embossings with considerable less stretching ofthe sheet.

In the claims the term projections is used to indicate anyconstructionior form of sheet in which a portion of the fibrous sheet isoffset or arranged out of the plane of the flat sheet to provide agreater amount of material for embossing than would be provided by afia-t sheet of the same width, and it is to be understood that while inan embossing die and embossing said sheet to re-form the corrugationsinto embossings of different nature and form and withv substantiallysmooth unbroken surfaces.

2. The method of embossing which comprises deforming a sheet to increasethe amount of material in a given area Without materially stretching thematerial of the sheet, placing said sheet in an embossing die andembossing said sheet to re-form the deformations into embossings ofdifferent nature and form and with substantially smooth unbrokensurfaces.

3. The method of embossing which comprises deforming a sheet to decreasethe projected area of the deformed part without materially increasingthe surface area of the deformed part, and embossing the sheet toproduce embossings of different character than the deformations butlocated substantially at the original vdeformations and having smoothunbroken surfaces.

4. The method of embossing, which comprises providing a sheet with aplurality of projections differing in character from the character ofthe embossing to be formed on the sheet, and embossing the sheet tore-form the projections into embossings having substantially smoothunbroken surfaces.

5. The method of embossing, which comprises forming a sheet withparallel corrugations, and embossing'the sheet by re-forming thecorrugations into parallel embossing's of dierent nature and form butextending substantially in the direction of the original corrugationsand having su tantially smooth unbroken surfaces.

The method of embossing, which comprises forming a sheet withprojections, and embossing the sheet by re-forming the projections intoembossings of different nature and form, the surplus material providedby the projections preventing rupture of the material by accommodatingthe difference in form of the embossings as com.- pared to theprojections.

7. The method of embossing sheet material with a die, which comprisesdeforming a sheet; to conform its surface area to the surface area ofthe die, and embossing the deformed sheet with the die withoutincreasing the surface area of the embossed sheet, whereby the surfacesof the embossings thus formed are substantially smooth.

Louis E. SHAW. l

